414 COMPOSlTyE. Seiiecio. 



14. S. aronicoides, ])C. Loosely and BOinuwliat hirsiitely woolly wlieu youn^', 

 glubroua when oUl : bU;m atoul, a foot to u yiiid high, hearing numerous small heads 

 in dense compound eymose eluslers : leaves oblong, varying to ovate or lanceolate 

 (3 to 5 inches long), irregularly and oi'ten coai-sely toothed, or the lower cavUine 

 sometimes laciniate-pinnatilid, th(! uppermost voduced to bracts: scales of the invo- 

 lucre lanceolate, acunnnate, not black-tipped : rays none, or occasionally one or two 

 short ones: dislc-ilowers 10 to 20. — *b'. exalUUus var. unijiosculosus, (iray in Tacir. 

 R Kep. iv. 111. 



Low groumls, CDiinnoii about tlie Bay of San Francisco, the Geysers, &c. A dwarf and nearly 

 entire-leaved variety, arounil Lassen's I'eak, Lemmoa. Involucre 3 lines long. 



15. S. hydrophilus, Nutt. Very glabrous apparently from the first, pale or 

 even glaucous : stem stout, 2 to 4 feet high, many-leaved and bearing numerous 

 paniculate-covynd)ose small heads : leaves thickish, entire or occasionally denticulate 

 or repand, mostly lanceolate, with broad and strong midrib ; the lower 5 to 9 inches 

 long and tapering into a stout petiole ; the upper successively shorter and sessile : 

 scales of the narrow involucre obhjiig-liuear, rather obtuse, mostly brownish-tipped : 

 mys 2 to 6 and linear, or sometimes wanting : disk-llowers 8 to 20. — Torr. & Gray, 

 Fl. ii. 440. 



Wet grounds, Lake ("o. and Siuista Co. (Brewer) ; salt niarsli at Vullejo (Orecnc) ; in the Siena 

 at Mono I'ass {Ilolaiuirr) ; near Carson (.liidcrsiin) ; and tiienee to the lioeky Mountains. A 

 lieculiur aiieeies. Invohiero 3 lines long, in speeiniens from Valiejo 4 lines lung and ray less. 



++ -I-+ ++ l\dl, 2 to 5 feet high, equably leafy to the top, glabrous throughout or marly 

 so, not woolly ivheu young : involucre cylindraceous, subtended by a few loose and 

 nearly setaceous bracts : akenes glabr'ous. 



16. S. Andinus, Nutt. Stems extremely leafy, often branching: leaves lan- 

 ceolate or linear-lanceolate (or the lower oblong), tapering to both ends, either 

 sharply and closely denticulate or entire ; the cauline nearly sessife : heads small, 

 very luimerou.s, corymbose-paniculate : rays G to 8. 



Near Carson Cily, Nevada (An,lrrso„\ and llierefore prulmlilv within Ike linuts of tlir Stair : 

 not lure nortliwanl and cnslward lo llie Kocky Aluunlains, along streains. IKmuIh varialile in 

 size and in nund)er of llie llowers, from 1 to lines high. 



1 7. S. triangularis. Hook. Stems mostly simple : leaves all but the ujiper- 

 mo.st petioletl and deltoid or triangular-lanceolate, or even hastate, acuminate, 

 thickly dentate (either coarsely or sometimes finely) with sharp salient teeth : heads 

 rather numerous, ccnyndiose : rays G to 12. — Hook. FI. ii. 332, i. 115. 



Low or wooded moist j,Mounds of the Sierra Nevada ; Mariposa drove, &e. (Jlrewcr, Bolundcr), 

 Donncr Lake (7'(*/;v;//), Sierra Valley (/.(.;/(//((';/) ; through Nevada lo the Koeky Mountains, and 

 north to British Cohunhia. Heads varying from 4 to 7 lines high. 



102. ARNICA, Linn. 

 Head niany-Howerod, with pistillate rays, or sometimes homogamous by the 

 absence of the ray.s ; tlie llowers all fertile. Involucre usually broadly campanulate, 

 naked at base ; the scales thin-lierbaceous, lanceolate or linear, equal, in one or two 

 series, lleceptaclo Hat, naked. Rays (dongated : disk-corollas with distinct and 

 usiudly elongated tube and I'unuelhniu or cylindraceous 5-lobed limb. Style-ap[)end- 

 ages obtuse, pubescenL Akenes linear, r)-an-l(nl or 5-10-ribbed, somewhat hirsute 

 or nearly glabrous. Pappus a single series of rather rigid strongly scabrous or 

 barbellate capillary bristles. — Pereiniial herbs; with mostly simple stems from 

 cnicping root.stocks, bearing solitary or few usually long-i)eduucled and rather large 

 heads of yellow llowers ; the leaves oppositt^ (!) or in omi or two Californian species 

 occasionally alternate, sint|)h', entire or merely lootheil. 



